LONG BEACH, Calif. — President Donald Trump’s Department of War is betting big on a “new-guard” of weapons manufacturers in his push to expand domestic defense production. After decades of legacy ...

Brain-focused weapons have moved from speculative fiction into the realm of active research, and the gap between what is technically possible and what is legally or ethically governed is widening fast ...

Does the technology prevent shootings? The evidence is thin. Critics suggest security companies are preying on fear.

The consensus of the committee is that more effort will have to be devoted to future undersea warfare operational concepts and to operations and systems analysis of the enabling technologies to ...